Weaknesses of type CWE-416

5,134 results

Uso após liberação de memória

Ocorre quando o código tenta acessar um bloco de memória que já foi desalocado (free/delete). O ponteiro continua apontando para aquele endereço, mas o dado ali pode ter sido sobrescrito por outra operação, causando comportamento impredizível, corrupção de dados ou execução de código arbitrário.

Example

Um buffer é alocado, depois liberado com free(). Mais adiante, o código ainda tenta ler ou escrever naquele mesmo ponteiro sem verificar. Se um atacante controlar a alocação subsequente daquele endereço, consegue manipular o conteúdo que será lido.

How to mitigate

Anule o ponteiro imediatamente após liberar (ptr = NULL), implemente análise estática para detectar acessos pós-liberação, use ferramentas como valgrind ou AddressSanitizer nos testes, e considere linguagens com gerenciamento automático de memória para código sensível.

CVE-2026-49173HIGHWindows Kernel Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-56172HIGHWindows VHD miniport driver Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-40418HIGHMicrosoft Office Click-To-Run Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-92026HIGHUse-after-free in the Networking componentEPSS 0.3%CVE-2026-48583HIGHWindows Kernel Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-34330HIGHWin32k Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-49795HIGHWindows Kernel Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-100769HIGHUse-after-free in the JavaScript: WebAssembly componentEPSS 0.3%CVE-2026-32154HIGHDesktop Window Manager Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-56177HIGHWindows Server Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-45592HIGHWindows Internet (wininet.dll) Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-64787MEDIUMA use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, EPSS 0.3%CVE-2018-14625MEDIUMA flaw was found in the Linux Kernel where an attacker may be able to have an uncontrolled read to kernel-memory from within a vm guest. A rEPSS 0.3%CVE-2026-50329HIGHMicrosoft DWM Core Library Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-62888HIGHWindows DWM Core Library Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-42986HIGHMicrosoft Graphics Component Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-42983HIGHWindows DWM Core Library Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-45605HIGHWindows Bluetooth Service Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-62707HIGHWindows Modern Device Management (MDM) Elevation of Privilege VulnerabilityEPSS 0.3%CVE-2026-58536HIGHWindows Cloud Files Mini Filter Driver Elevation of Privilege VulnerabilityEPSS 0.3%